I have been considering this for many weeks now and debating it with the rest of the staff.
The big problem is that there is potential for disagreement and drama when staff move threads which are in a gray area. If staff think a thread should be moved but 30 posters think it should stay, they may not be happy with staff essentially decreeing "this is a shitty thread and we don't care if you like it and think the person is a lolcow".
Of course, the thread will still exist, but it'll be surrounded by much shittier threads in a board with less rule enforcement.
I'm still pretty undecided, especially since most people are fine with just hiding threads.